中国机械工程 ›› 2010, Vol. 21 ›› Issue (20): 2408-2411.

• 机械基础工程 • 上一篇    下一篇

钢管中基于磁致伸缩效应扭转导波激励的实验研究

朱龙翔;王悦民;李城华;沈立华
  

  1. 海军工程大学,武汉,430033
  • 出版日期:2010-10-25 发布日期:2010-10-29
  • 基金资助:
    中国博士后科学基金资助项目(200801489)
    Supported by China Postdoctoral Science Foundation(No. 200801489)

Experimental Study on Exciting Torsional Guided Wave in Steel Pipe with Magnetostrictive Transducer

Zhu Longxiang;Wang Yuemin;Li Chenghua;Shen Lihua
  

  1. Naval University of Engineering,Wuhan,430033
  • Online:2010-10-25 Published:2010-10-29
  • Supported by:
    Supported by China Postdoctoral Science Foundation(No. 200801489)

摘要:

对磁致伸缩扭转导波传感器进行了实验研究。在钢管外表面粘贴与钢管轴向方向成45°角的铁钴条带,通过条带的磁致伸缩效应,在钢管中成功地激发出T(0,1)模态扭转导波,得到了信噪比良好的信号。使用多种激励频率对完整管道进行测试,对信号进行对比研究,得出了最佳的激励频率。

关键词:

Abstract:

A configuration of magnetostrictive transducer to excite torsional guided wave in steel pipe was investigated.Several pieces of strips made of iron-cobalt alloy were attached to the steel pipe with the alignment angle 45° to the pipe axial direction. Through the magnetostrictive effect of the strips, torsional guided wave of T(0,1) mode was successfully excited in the steel pipe with high SNR. A intact steel pipe was tested in different excitation frequencies, the test singals were compared and the best excitation frequency was determined.

Key words:

中图分类号: